The folowing table expresses '987' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
| Base | DR10 | DR9 | DR8 | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 1111011011 | 1000 | 1 | |||||||
| 3 | 1100120 | 12,10 | 1 | |||||||
| 4 | 33123 | 30 | 3 | |||||||
| 5 | 12422 | 21 | 3 | |||||||
| 6 | 4323 | 20 | 2 | |||||||
| 7 | 2610 | 12 | 3 | |||||||
| 8 | 1733 | 16 | 7 | |||||||
| 9 | 1316 | 12 | 3 | |||||||
| 10 | 987 | 24 | 6 | |||||||
| 11 | 818 | 16 | 7 | |||||||
| 12 | 6A3 | 17 | 8 | |||||||
| 13 | 5AC | 21 | 3 | |||||||
| 14 | 507 | C | ||||||||
| 15 | 45C | 16 | 7 | |||||||
| 16 | 3DB | 1B | C |
Factors: 3 * 7 * 47
987 is the 16th Fibonacci number.